gentoo-x86/eclass/vala.eclass

# Copyright 1999-2012 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/eclass/vala.eclass,v 1.4 2012/09/20 04:48:26 tetromino Exp $

# @ECLASS: vala.eclass
# @MAINTAINER:
# gnome@gentoo.org
# @AUTHOR:
# Alexandre Rostovtsev <tetromino@gentoo.org>
# @BLURB: Sets up the environment for using a specific version of vala.
# @DESCRIPTION:
# This eclass sets up commonly used environment variables for using a specific
# version of dev-lang/vala to configure and build a package. It is needed for
# packages whose build systems assume the existence of certain unversioned vala
# executables, pkgconfig files, etc., which Gentoo does not provide.
#
# This eclass provides one phase function: src_prepare.

inherit eutils multilib

case "${EAPI:-0}" in
        0)      die "EAPI=0 is not supported" ;;
        1)      ;;
        *)      EXPORT_FUNCTIONS src_prepare ;;
esac

# @ECLASS-VARIABLE: VALA_MIN_API_VERSION
# @DESCRIPTION:
# Minimum vala API version (e.g. 0.16).
VALA_MIN_API_VERSION=${VALA_MIN_API_VERSION:-0.10}

# @ECLASS-VARIABLE: VALA_MAX_API_VERSION
# @DESCRIPTION:
# Maximum vala API version (e.g. 0.18).
VALA_MAX_API_VERSION=${VALA_MAX_API_VERSION:-0.18}

# @ECLASS-VARIABLE: VALA_USE_DEPEND
# @DEFAULT_UNSET
# @DESCRIPTION:
# USE dependencies that vala must be built with (e.g. vapigen).

# @FUNCTION: vala_api_versions
# @DESCRIPTION:
# Outputs a list of vala API versions from VALA_MAX_API_VERSION down to
# VALA_MIN_API_VERSION.
vala_api_versions() {
        eval "echo 0.{${VALA_MAX_API_VERSION#0.}..${VALA_MIN_API_VERSION#0.}..2}"
}

# @FUNCTION: vala_depend
# @DESCRIPTION:
# Outputs a ||-dependency string on vala from VALA_MAX_API_VERSION down to
# VALA_MIN_API_VERSION
vala_depend() {
        local u v versions=$(vala_api_versions)
        [[ ${VALA_USE_DEPEND} ]] && u="[${VALA_USE_DEPEND}]"

        echo -n "|| ("
        for v in ${versions}; do
                echo -n " dev-lang/vala:${v}${u}"
        done
        echo " )"
}

# @FUNCTION: vala_best_api_version
# @DESCRIPTION:
# Returns the highest installed vala API version satisfying
# VALA_MAX_API_VERSION, VALA_MIN_API_VERSION, and VALA_USE_DEPEND.
vala_best_api_version() {
        local u v
        [[ ${VALA_USE_DEPEND} ]] && u="[${VALA_USE_DEPEND}]"
        for v in $(vala_api_versions); do
                has_version "dev-lang/vala:${v}${u}" && echo "${v}" && return
        done
}

# @FUNCTION: vala_src_prepare
# @USAGE: [--ignore-use] [--vala-api-version api_version]
# @DESCRIPTION:
# Sets up the environment variables and pkgconfig files for the
# specified API version, or, if no version is specified, for the
# highest installed vala API version satisfying
# VALA_MAX_API_VERSION, VALA_MIN_API_VERSION, and VALA_USE_DEPEND.
# Is a no-op if called without --ignore-use when USE=-vala.
# Dies if the USE check is passed (or ignored) and a suitable vala
# version is not available.
vala_src_prepare() {
        local p d valafoo version ignore_use

        while [[ $1 ]]; do
                case $1 in
                        "--ignore-use" )
                                ignore_use=1 ;;
                        "--vala-api-version" )
                                shift
                                version=$1
                                [[ ${version} ]] || die "'--vala-api-version' option requires API version parameter."
                esac
                shift
        done

        if [[ -z ${ignore_use} ]]; then
                in_iuse vala && ! use vala && return 0
        fi

        if [[ ${version} ]]; then
                has_version "dev-lang/vala:${version}" || die "No installed vala:${version}"
        else
                version=$(vala_best_api_version)
                [[ ${version} ]] || die "No installed vala in $(vala_depend)"
        fi

        export VALAC=$(type -P valac-${version})

        valafoo=$(type -P vala-gen-introspect-${version})
        [[ ${valafoo} ]] && export VALA_GEN_INTROSPECT="${valafoo}"

        valafoo=$(type -P vapigen-${version})
        [[ ${valafoo} ]] && export VAPIGEN="${valafoo}"

        valafoo="${EPREFIX}/usr/share/vala/Makefile.vapigen"
        [[ -e ${valafoo} ]] && export VAPIGEN_MAKEFILE="${valafoo}"

        export VAPIGEN_VAPIDIR="${EPREFIX}/usr/share/vala/vapi"

        mkdir -p "${T}/pkgconfig" || die "mkdir failed"
        for p in libvala vapigen; do
                for d in "${EPREFIX}/usr/$(get_libdir)/pkgconfig" "${EPREFIX}/usr/share/pkgconfig"; do
                        if [[ -e ${d}/${p}-${version}.pc ]]; then
                                ln -s "${d}/${p}-${version}.pc" "${T}/pkgconfig/${p}.pc" || die "ln failed"
                                break
                        fi
                done
        done
        : ${PKG_CONFIG_PATH:="${EPREFIX}/usr/$(get_libdir)/pkgconfig:${EPREFIX}/usr/share/pkgconfig"}
        export PKG_CONFIG_PATH="${T}/pkgconfig:${PKG_CONFIG_PATH}"
}
1	tetromino	1.1	# Copyright 1999-2012 Gentoo Foundation
2			# Distributed under the terms of the GNU General Public License v2
3	pacho	1.5	# $Header: /var/cvsroot/gentoo-x86/eclass/vala.eclass,v 1.4 2012/09/20 04:48:26 tetromino Exp $
4	tetromino	1.1
5			# @ECLASS: vala.eclass
6			# @MAINTAINER:
7			# gnome@gentoo.org
8			# @AUTHOR:
9			# Alexandre Rostovtsev <tetromino@gentoo.org>
10			# @BLURB: Sets up the environment for using a specific version of vala.
11			# @DESCRIPTION:
12			# This eclass sets up commonly used environment variables for using a specific
13			# version of dev-lang/vala to configure and build a package. It is needed for
14			# packages whose build systems assume the existence of certain unversioned vala
15			# executables, pkgconfig files, etc., which Gentoo does not provide.
16			#
17			# This eclass provides one phase function: src_prepare.
18
19	pacho	1.5	inherit eutils multilib
20	tetromino	1.1
21			case "${EAPI:-0}" in
22			0) die "EAPI=0 is not supported" ;;
23			1) ;;
24			*) EXPORT_FUNCTIONS src_prepare ;;
25			esac
26
27			# @ECLASS-VARIABLE: VALA_MIN_API_VERSION
28			# @DESCRIPTION:
29			# Minimum vala API version (e.g. 0.16).
30			VALA_MIN_API_VERSION=${VALA_MIN_API_VERSION:-0.10}
31
32			# @ECLASS-VARIABLE: VALA_MAX_API_VERSION
33			# @DESCRIPTION:
34			# Maximum vala API version (e.g. 0.18).
35			VALA_MAX_API_VERSION=${VALA_MAX_API_VERSION:-0.18}
36
37			# @ECLASS-VARIABLE: VALA_USE_DEPEND
38			# @DEFAULT_UNSET
39			# @DESCRIPTION:
40			# USE dependencies that vala must be built with (e.g. vapigen).
41
42			# @FUNCTION: vala_api_versions
43			# @DESCRIPTION:
44			# Outputs a list of vala API versions from VALA_MAX_API_VERSION down to
45			# VALA_MIN_API_VERSION.
46			vala_api_versions() {
47			eval "echo 0.{${VALA_MAX_API_VERSION#0.}..${VALA_MIN_API_VERSION#0.}..2}"
48			}
49
50			# @FUNCTION: vala_depend
51			# @DESCRIPTION:
52			# Outputs a \|\|-dependency string on vala from VALA_MAX_API_VERSION down to
53			# VALA_MIN_API_VERSION
54			vala_depend() {
55			local u v versions=$(vala_api_versions)
56			[[ ${VALA_USE_DEPEND} ]] && u="[${VALA_USE_DEPEND}]"
57
58			echo -n "\|\| ("
59			for v in ${versions}; do
60			echo -n " dev-lang/vala:${v}${u}"
61			done
62			echo " )"
63			}
64
65			# @FUNCTION: vala_best_api_version
66			# @DESCRIPTION:
67			# Returns the highest installed vala API version satisfying
68			# VALA_MAX_API_VERSION, VALA_MIN_API_VERSION, and VALA_USE_DEPEND.
69			vala_best_api_version() {
70			local u v
71			[[ ${VALA_USE_DEPEND} ]] && u="[${VALA_USE_DEPEND}]"
72			for v in $(vala_api_versions); do
73			has_version "dev-lang/vala:${v}${u}" && echo "${v}" && return
74			done
75			}
76
77			# @FUNCTION: vala_src_prepare
78	pacho	1.5	# @USAGE: [--ignore-use] [--vala-api-version api_version]
79	tetromino	1.1	# @DESCRIPTION:
80			# Sets up the environment variables and pkgconfig files for the
81			# specified API version, or, if no version is specified, for the
82			# highest installed vala API version satisfying
83			# VALA_MAX_API_VERSION, VALA_MIN_API_VERSION, and VALA_USE_DEPEND.
84	pacho	1.5	# Is a no-op if called without --ignore-use when USE=-vala.
85			# Dies if the USE check is passed (or ignored) and a suitable vala
86			# version is not available.
87	tetromino	1.1	vala_src_prepare() {
88	pacho	1.5	local p d valafoo version ignore_use
89	tetromino	1.1
90	pacho	1.5	while [[ $1 ]]; do
91			case $1 in
92			"--ignore-use" )
93			ignore_use=1 ;;
94			"--vala-api-version" )
95			shift
96			version=$1
97			[[ ${version} ]] \|\| die "'--vala-api-version' option requires API version parameter."
98			esac
99			shift
100			done
101
102			if [[ -z ${ignore_use} ]]; then
103			in_iuse vala && ! use vala && return 0
104			fi
105
106			if [[ ${version} ]]; then
107			has_version "dev-lang/vala:${version}" \|\| die "No installed vala:${version}"
108	tetromino	1.1	else
109			version=$(vala_best_api_version)
110			[[ ${version} ]] \|\| die "No installed vala in $(vala_depend)"
111			fi
112
113			export VALAC=$(type -P valac-${version})
114
115	tetromino	1.2	valafoo=$(type -P vala-gen-introspect-${version})
116	tetromino	1.3	[[ ${valafoo} ]] && export VALA_GEN_INTROSPECT="${valafoo}"
117	tetromino	1.1
118	tetromino	1.2	valafoo=$(type -P vapigen-${version})
119	tetromino	1.1	[[ ${valafoo} ]] && export VAPIGEN="${valafoo}"
120
121			valafoo="${EPREFIX}/usr/share/vala/Makefile.vapigen"
122			[[ -e ${valafoo} ]] && export VAPIGEN_MAKEFILE="${valafoo}"
123
124			export VAPIGEN_VAPIDIR="${EPREFIX}/usr/share/vala/vapi"
125
126			mkdir -p "${T}/pkgconfig" \|\| die "mkdir failed"
127			for p in libvala vapigen; do
128			for d in "${EPREFIX}/usr/$(get_libdir)/pkgconfig" "${EPREFIX}/usr/share/pkgconfig"; do
129	tetromino	1.2	if [[ -e ${d}/${p}-${version}.pc ]]; then
130			ln -s "${d}/${p}-${version}.pc" "${T}/pkgconfig/${p}.pc" \|\| die "ln failed"
131	tetromino	1.1	break
132			fi
133			done
134			done
135			: ${PKG_CONFIG_PATH:="${EPREFIX}/usr/$(get_libdir)/pkgconfig:${EPREFIX}/usr/share/pkgconfig"}
136			export PKG_CONFIG_PATH="${T}/pkgconfig:${PKG_CONFIG_PATH}"
137			}